Add 15/75 and 21/70
15/75 + 21/70 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
15/75 = 15 × 14/75 × 14 = 210/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
21/70 = 21 × 15/70 × 15 = 315/1050 - Add the two like fractions:
210/1050 + 315/1050 = 210 + 315/1050 = 525/1050 - 525/1050 simplified gives 1/2
- So, 15/75 + 21/70 = 1/2
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